feat: Implement Errors-in-Variables (EIV) linear detrending

- Added EIV linear detrending capabilities to the project.
- Introduced new functions for EIV estimation and integrated them into existing workflows.
- Updated relevant modules to handle EIV configurations and parameters.
- Enhanced logging to capture EIV-related diagnostics.
- Modified plotting functions to visualize EIV results.
- Added tests to ensure proper functionality of EIV parsing and calculations.
- Updated documentation to reflect new features and usage instructions.